Cervical has multiple meanings in the human body. The word cervix is derived from the Latin root word cervix which means neck. For this reason, the word cervical pertains to many areas where tissues narrow to a neck-like passage, and not only in your neck.
Cay /cay/ [1 syll.] as a name for girls is of Greek derivation, and Cay means pure. Cay is a variant transcription of Catherine (Greek): from katharos. Cay is also a derivative of Katherine (Greek).
Noun. 1. caustic-any chemical substance that burns or destroys living tissue. chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight. lye-a strong solution of sodium or potassium hydroxide.